fix build?

src/fetchers/body.ts

@@ -1,4 +1,4 @@
-import FormData = require('form-data');
+import FormData from 'form-data';
 
 import { FetcherOptions } from '@/fetchers/types';
 

tsconfig.json

@@ -2,7 +2,8 @@
   "compilerOptions": {
     "target": "es2021",
     "lib": ["es2021"],
-    "module": "commonjs",
+    "module": "CommonJS",
+    "esModuleInterop": true,
     "declaration": true,
     "outDir": "./lib",
     "strict": true,

vite.config.js

@@ -2,6 +2,7 @@ const path = require('path');
 const { defineConfig } = require('vitest/config');
 const { default: eslint } = require('vite-plugin-eslint');
 const dts = require('vite-plugin-dts');
+const pkg = require('./package.json');
 
 const main = path.resolve(__dirname, 'src/index.ts');
 
@@ -14,12 +15,19 @@ module.exports = defineConfig({
   },
   build: {
     minify: false,
+    rollupOptions: {
+      external: Object.keys(pkg.dependencies),
+      output: {
+        globals: Object.fromEntries(Object.keys(pkg.dependencies).map((v) => [v, v])),
+      },
+    },
     outDir: 'lib',
 
     lib: {
       entry: main,
       name: 'index',
       fileName: 'index',
+      formats: ['umd', 'es'],
     },
   },
 });